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Elaboration, caractérisation et développement de nouveaux grades de pigments aluminium

Abstract : Ecological issues related to solvents emission into the atmosphere led to the settings of new regulations. Paint manufacturers, amongst the main producers of Volatile Organic Compounds, had to adapt themselves: evolution towards the use of waterborne systems had to be carried out with adjustments of products and processes. For instance, aluminium pigments used for automotive metallised paints were treated prior to their use in order to avoid corrosion which is detrimental to aesthetic properties and also safety (hydrogen gaz production). The already existing treatments (phosphor-organic compounds or CrVI compounds) are not perfectly suitable (toxicity problems).
This study demonstrated that aluminium pigments stable in waterborne systems could be obtained
through encapsulation into a PMMA shell by an emulsion-like polymerisation process. Moreover, a
new production process, based on the use of silane agents, was set to obtain a universal grade, i.e.
suitable for both waterborne and solventborne systems.
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Submitted on : Thursday, March 30, 2006 - 6:06:53 PM
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  • HAL Id : tel-00012066, version 1



Fabrice Morvan. Elaboration, caractérisation et développement de nouveaux grades de pigments aluminium. Matériaux. Université Sciences et Technologies - Bordeaux I, 2002. Français. ⟨tel-00012066⟩



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